Hi all,
I'd just like to add a refinement to what Peter shows in the second
case. If you want to define a monthly axis where the coordinate
locations are at the center of each month, then follow this example in
the Users Guide, on defining a time axis using /EDGES, so the
boundaries between axis cells lie at the start of each month, and the
coordinates in the middle.
http://ferret.pmel.noaa.gov/Ferret/documentation/users-guide/commands-reference/DEFINE#_VPINDEXENTRY_1310
Ansley
Peter Szabo wrote:
Dear Yadu,
It is a giveaway:
I do not know whether you want climatoligical monthly average (12 data)
or time-series monthly average(6 years*12 monthy=60 data), but here is
what you can do:
use climatological_axes !you will be able to produce
climatological average
use "yourfile.nc"
define axis/t="1-JAN-2000":"31-DEC-2005"/np=2192 newtime
!you should have your time axis in this format, if you already have in
it, do not need this line
let var1=yourvariable_in_yourfile[gt=newtime@asn]
let climat=var1[gt=month_irreg@mod] !this variable will be
the climatological monthly average. dimension l=1 will be average of
all the six "januaries" in time
define axis/t="15-JAN-2000":"15-DEC-2005"/np=72 monthly
!create monthly time-series for 6 years
let monthlyave=var1[gt=monthly@ave] !dimension l=1 is the
average of the first month
you should take note of the unit of you variable after averaging,
especially when you are dealing with precipitation files!
Cheers,
Peter Szabo